Stolzite and Alunite Physical Properties

Stolzite

Alunite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

22.6-2.9

1 7.18

1.5 Fracture

Conchoidal, Uneven, Brittle

Conchoidal, Uneven

1.6 Cleavage

Imperfect on {001}, indistinct on {011}

On {0001}, perfect

1.7 Mohs Hardness

2.5-33.5-4

2 10

1.8 Chemical Composition

Not Available

KAl3(SO4)2(OH)6

Stolzite and Alunite Chemical Formula

While comparing Stolzite and Alunite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Stolzite and Alunite chemical formula.

Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Stolzite and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Stolzite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Stolzite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Stolzite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.